Concrete-laying machine



Dmn 13, 1927.`

A. N. GEORGE ET AL CONCRETE LAYING MACHINE Flei March 24. 1926 2 Sheets-Sheet 1 IN VEN TOR N. George Bressz nec. 13, 1927. 1,652,434

A. N.. GEORGE ET AL CoNcRETE LAYING MACHINE Fil'ea ual-en 24. 192s 2 sheets-sheet 2 18 [71' 4; INVENTOR. Abram N. George y BY Vincent Bressi Patented la,l 1927...

UNITED sfinvras PATENT OFFICE.

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or soUTIrAsannNA, AND viNcEN'r nasser, or ocEANsi'Dn,

' cannon-NIA.

coNcnEmE-LAYING MACHINE.

ppimetion mea March 24, 1926.- semi No. sassi.

' This invention relates to a' machine, the purpose of which is to 'facilitate the rapid aying. and setting of concrete.' While the invention may beutili'zedin various connecitionsfit 'is especially useful as applied to a' 'machine for laying concrete roadways. y It is the present practice 1n constructing f concrete roadways to reduce as far as possib'lethe proportion of sand .and water'used in the concrete, and in laying concrete it iis desirable t0 have the pieces of aggregate aggregate whichmus-t be -l'led by the'ce-4 '-dry, i-t is found in' practice that it requires considerablel tamping'to condense the con- .crete to-i'nsure that "thespaces betweenthe l the cement. l

The general objecto-f this inventionis to produce a machine .ofy simple 4'c`o'nstrur :t ion' particles of aggregate are properly filled by which'can be usedto eii'ect'the laying of conf crete -in a comparativelydry state but `which will operate yin vsuch away as toiinsure theipi'oper density ofthe concrete when laid, therebyavoidingthe necessity for anl #extensive amount 'of tamping. '.In its oo nstruction the machine includes adeliveryopening which extendstransverselylto the:

. Lroadway'and throughwhich the, concrete passes on.e.of the objectsof the vvinventionis` tofacilitate the 'delivery of a 'substantially uniform amountof concrete throughoutth'e entire length of thisv opening and; to pro- 'vide means" for regulatingfthe .size ofv this pearhereinafter.

The inventio'n 'consists ofthe novel `'parts 4of thistype.v

Aopening thrughut-itslength, A further object ,of the' vention is to improve the generalV construction ot machines -Further objectsof the invention will. ap-4 I' and 'combination of parts to be -described hereinafter, all otwhich.contributeto' pro- :duce an eicient'concrlet'e laying machine.

'whilethe-broad scope of the invention is 59 pointed outinthe.

A tion. the machine 1s .E preferred embodiment of the invention' is described. in" the' following specification,

on the line 3--3 of Figure 2 ment and sand.` .But where the mix is' to separate the water- Yand comprises .a

the machine broken away at intermediate portions o f its length.

Figure 3 is a vertical section, taken about and further illustrating details of the machine.

. vas closely-locked together as possible-'there-' A by reducingthe spaces between the pieces of Flgure'i is a plan of the bottom opening of the hopper of the machine broken away and particularly illustrating the details of the construction of the gate for controlling the distribution of the concrete asl it flows through the-delivery opening.

F'gure 5A is a 'section taken about on the line 5 -5 of Figure .4 and further' illustr'ating details ofthe gate.

In practicing our invention, we provide a hopper supported on the frame of the mac ne for carrying the wetconcrete and we provide means Vfor directing the concrete from the hopper to the place where it is to s et and we :preferably provide means' for 'agitating the concreteas it passes down so as from it.

The machine illustrated is constructed to be used for laying concrete in a roadway frame 1 which may be built of 'angle irons and sidefplates 2, the con# struction being suchv as to enable the frame .to support a relatively large hopper 3 which extends transversely to the roadway. The machiieis constructed so thatit is movable portedon wheels 5 and the ends of-a roller 6, which roll onthe strin'gers.'l Within the hopper 3, we provide a quantity of already mixed concrete 7 .and as the machine moves along slowly., this concrete passes down through Van opening 8 at the bottom of the 'hopper'from which point it is directed down along the roadway. For -this purpose we prefer to provide a pair of Stringers 4 of- Wood which are laid at the sides of the excavated road-bed and the machine is suponto the road-bed 9. We provide means for eiiecting as'ubstantially uniformdistribution of the concrete asfit passes through this opening, and for this purpose we provide a distributing device 10 which is in the form of a (see Figure 2.), v

duplex or double feed-screw which extends along the bottomof the vhopper. This feed-.screw includes the .section 11 at the right and the section 12 at the left and these sections are of opposite characters to each other, that is to say, one is a righthand screw and the .other is a left-handscrew, so that when the feed-screw is rotated, the material at the middle of the hoper is constantlv being moved out toward its ends.

In order to regulate the width of the opening 8 throughout its length, we provide an adjustable gate 13, (see Figures 3 and 4). This gate extends transversely across the opening through which the concrete passes and is preferably constructed of two gates or slides 14 which are in the form'of plates, each plate having its own corresponding adjusting device adjacent the end of the opening.` For this purpose, the end of each gate plate is provided with a slot 15 which receives a pin 16 on an adjustable slide 17 which may be adjusted by means of an adjusting screw 18 formed with a crank 19 for rotating the same. This construction is duplicated at each side of the machine. We provide meansfor adjusting the inner ends of gate-plates .14. For this purpose, we provide an adjustable slide 20 at this point which is controlled by an adjustable screw 21 with a crank 22,

The gate-plates14 are movably attached to the slide 20, for example, by a commonivot-pin 23. In order to effect a uniform istribution of the concrete, it is usually neces'sary to have the opening wider toward the ends than at the middle.

' Figure 5 shows the details of this consti-uc.

tion. Below the delivery opening 8, we prof vide means for receiving the concrete and laying it in the roadway. For this urpose,

we refer to provide an inclined cute 24,

the ower edge of which rests on the roadbed 9 and the -rear end of which is supported on an agitating device. In the present in- Stance, we provide a transverse shaft 25, carrying a air of eccentrics 26 which are strapped lnto arudimentary socket on the underside of the chute. AIn other words, this shaft sup orts the chute and at each revolution of t e shaft it imparts anup and down vibration to the receiving end. of the chute. This chute extends throughout the full width of the slab of concrete which is being laid. We jlrefer to have it extend across the entire wid of the roadway.

In the operation of the machine, .it proceeds slowly in the direction of the arrow indicated in Figure 3. As the concrete is laid, it passes under a transverse beam, such as the I-beam 27 which operates asa scraper A little to.

or leveler for the laid concrete. the rear of this scraper, the roller above referred to is located. This roller presses the face of the concrete which has been laid and smooths its surface. If desired', this roller can be mounted so as tol put some which is attached to a shortshaft which extends downwardly'and is provided withaI worm 36 forv driving a worm-wheel 37 on an 1 axle 38 which carries the wheels 5 running on the stringere. may be driven by an inclined shaft 39 which is driven fromthe shaft .29 by bevel-gears ed The agitating shaft 25 40 and which drives the shaft 25 through j bevel-gears 41 (see Figures 1 and 2).

' In the 'operation of the machine, it should be understood that it will be driven along slowly by the wheels 5 which make about one-half of a revolution per minute. The agitator shaft should be driven at a relatively high` speed, for example, four hun-,

dred revolutions per minute. Thespeed of driving the feed-worm 10 would depend upon the pitch of the screw.v As the machine moves along, the concrete moves down'the opening 8 and the distribution of the 'concrete is regulated 'by rotating the 'cranks 19 and 22to adjust the gate-plates 14. As the concrete passes down the chute 24,' the agital* tion jogs the aggregate into a proper lockf7 that is to say, it condenses the concrete as it is laid.- The scraper 27 levels off the top of the concrete and the roller 6 smooths it ofi'` or rolls the same with slight pressure.

Itis understood that the embodiment of the 'invention' described herein is only one ofthe many embodiments this invention may take, and we-do not wish to be limited to thepracticeof the invention, norl in the'claims, to the' particular embodiment set forth. What we claim is: l 'f t 1. In a concrete laying machine, the combination of' a frame, a hopper supportedon the frame for carrying' wet'` concrete, means for supporting the concrete from below andl directing'it from the` hopper tothe place where it is laid, and an agitating device for subjecting said supporting means to a rapid succession of vibratory movements to vcondense the same. t l

2. In a concrete laying machine, the conibination" of 'aframe, a hopper supported'A on the frame for' carryingpwet concrete, a chute for receivin the concrete from'V the hopper and for laying' the concrete, and -means for subjecting the' chute to a rapid succession of vibratory movements-to condense the concrete. l v

'3. In a machine for laying concrete in a roadway, the .combination of a pair of stringers disposed respectively at the side of the roadway, a frame movably supported on the 'strin ers, a hopper supported on the frame an extending transversely across the roadway, a chute for receiving the concreterom the hopper and for laying the same in the roadway, and means for subjecting the chute to a rapid succession of vibratory movements to condense the concrete.

4.11m a machine for .laying concrete in a roadway, the combination of a pair of stringers disposed respectively at the sides of the roadway, a frame with wheels supporting the same to move along the stringers, a transversely disposed hopper supported on the frame and having a delivery opening extending across the roadway, feeding means vin the hopper for moving the.concrete toward the edges of the roadway, a chute for receiving the `concrete from the delivery opening, and means'or subjecting the chute to a rapid succession of vibratory movements Ato condense the concrete.

5.In a machine for laying concrete in a roadway, the combination of av movable frame, a transversely disposed hopper care ried thereby extendin substantiallycom- -pletely across the roa way and having an elongated delivery opening extending sub-.

stantially throughout its length, a gate extending across t e opening and transversely to the direction of movement of the concrete on the stringers, a transverse down the chute for controlling the opening, means for controlling the gate to regulate the openingpast it, and a chutev extending substantially throughout the length of the delivery opening for receiving the concrete from the delivery .opening and for laying delivery opening 'and for laying` the same.

7. In a machine for laying concrete in a roadwa the combination of apair of stringers isposed respectively at the sides of the roadway, .a frame with rollers runnin on thestringers a transverse hopper carri by the frame with a delivery opening at the bottom thereof, 'a pair of gates for the deof March, 1926.

livery opening, means correspondinglto each gate for regulating the position of t e same, a chute for receiving the concrete from the delivery opening and for laying the same,

and means for agitating the chute to con-- dense the concrete.

8. In a machine for laying concrete in a roadway, the combination of a chute extending substantially the width of the roadway, means for delivering concrete onto the chute, said chute being inclined and operat' ing to lay the concrete in the roadway, and means for agit-ating the chute to condense the concrete.

9. In a machine for laying concrete in a roadway, the combination of a transverse lhopper having an opening ,extending across the roadway, feeding means in .the hopper above the opening, a shoe near the middle of the' opening with means for adjusting the same across the opening, a pair of gates' attached to the shoe and extending longitudi-i nallyof the opening, means for moving the gates adjacent their outer ends to regulate the size of the opening past the gates, and a chute Afor receiving the concrete y-from the opening and for laying the same.

10. In a concrete laying machine, the combination of a frame, means for supporting a quantity of the concrete from below' and d-irect-,ing it lto the place where it lis laid, and.

an agitating device for subjecting said supporting means to a apid succession of vibratory movements t condense the concrete.

11.In a machine for laying concrete in a roadway, the combination of a movable frame, la transversely disposed hop er carried thereby extending-substantially completely across the roadway and having an elongated deliveryopening extending substantially throughout its length, a gate for controllingthe opening, means for controllin the gate to regulate the opening past it, a c nte extending substantially throughout thelength of the delivery'opening for receiving the concrete from the4 delivery opening and for laying the same, and vmeans for subjecting the chute to a rapid succession of vibratory movements to condense the concrete as it moves down the chute.

Signed at Los Angeles, Calif., this 3. day

ABRAM N. GEORGE.

signed a 'san Diego, california, this mh day of'March,1926. v

VINCENT BEEssI. 

